20204961

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{641}}^1$

素因数の和:749

約数の個数: 32

約数和(自身を含む): 32870400

約数和(自身を除く): 12665439

約数列:

[1, 3, 7, 19, 21, 57, 79, 133, 237, 399, 553, 641, 1501, 1659, 1923, 4487, 4503, 10507, 12179, 13461, 31521, 36537, 50639, 85253, 151917, 255759, 354473, 962141, 1063419, 2886423, 6734987, 20204961]

約数ペア:

[(1, 20204961), (3, 6734987), (7, 2886423), (19, 1063419), (21, 962141), (57, 354473), (79, 255759), (133, 151917), (237, 85253), (399, 50639), (553, 36537), (641, 31521), (1501, 13461), (1659, 12179), (1923, 10507), (4487, 4503)]